Switch 2 does not exist in a vacuum.
It's LCD, it's primarily filled with PS4 gen looking games and exclusives are nothing to write home about tech-wise.
Current market being: PS5 Slim for $450 with a game, slew of devices like Steam Deck that can be bought for around the same price but with 512gb and beautiful OLED screen. Plus don't forget about the ecosystem costs.
Both PS5 and Deck-like devices are supporting cheap standart memory expansions (m.2 gen4 and normal regular SD cards), their controllers are both very feature-rich not expensive (usually on clearances), there's vast list of compatable headsets, external devices etc. Plus you don't pay for basic features like voice chat or Discord integration. Switch has very little to differentiate here, really. Battery life? From 2 to 6 hours, just like Ally or Deck. Mouse? Touchpad on deck is far more interesting and portable solution. Hybrid dock? On PS5 this can be solved with Chiaki or Portal, on Deck-like devices with a simple USB-C hub (active cooling is already included).
I'd say the Switch 2 itself, while on an expensive side, is more or less OK price-wise. But putting it into context of a current market the value proposition is by far not there. Switch 1 in 2017 was not cheap either (around the price of PS4 Slim), but for the novelty of the concept and slew of powerful 1st party launch titles the value proposition was there 100% and Nintendo struck gold with it.